Yesterday, Google pushed some new open source code to AOSP (Android Open Source Project) marked with 2 new tags: android-4.2.1_r1.1 and android-4.2.1_r1.2. The build number corresponding to the 4.2.1_r1.2 release is - you guessed it - JOP40G (with mentions of JOP40F and JOP40E along the way too) - the same one we thought would be 4.2.2.